DL-Pantolactone from China
DL-Pantolactone, the cyclic internal ester (lactone) of pantothenic acid, serves as a provitamin B5 intermediate that hydrolyzes to pantothenic acid. Covered under HTS 2936.24.0100 as a pantothenic acid derivative used primarily in vitamin synthesis.
Duty Rate — China → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Document lactone hydrolysis to pantothenic acid confirming provitamin status
• Monitor shelf-life stability data for transport classification under Chapter Note 1(f)
• Ensure ≥95% purity to avoid mixture reclassification